Martin bishop



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MARTIN BISHOP, or PUTNAM, 01110 Leners Parmi No, 68,833, ma ,september17, 1867.

, IMPROVEMENT IN carat-Leens.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, MARTIN BISHOP, of Putnam, Muskingum county, Stato ofOhio, have invented improvements in Canal-Locks and Submerged Gates foreanalsor rivers; and I do hereby declare the following to be an exactdescriptionthereof, reference being had to the accompanying drawings andto the letters of reference marked thereon, making a part of thisspecification;

The natnge of my invention consists in the construction of the gate,withits shaft and arms `fitting between subdivisions, and resting belowthe bottom of thecanal; also, the corresponding shaped chambers beneaththe bottom of the canal, the adjustable wickets, and the movable devicefor making the gate` water-tight`when raised; and the object of myinvention is to have a perfect r lock when the gate is up, and when downit is a canal for the water to pass along with itsl regular flow; orwhen submerged in a river it is'a complete shipchannel or lock wheneverrequired.

A represents the side walls. B are openings or chambers in the walls'forthe purpose of containing thehoisting machinery or apparatus,.such as ascrew, C, with a travelling-burr, D, movingup or down, with side pitmenE as guides to operate their movements on the screw, as the screw isoperated by the wrench or levers G above. To the gate K a chain, H, andweight, J, are attache-fl to raise andcou'nterbalanee the raising ofthegate K. The gate K is attached to a shaft', L, extending across thelock, located at the bottom of the lock'and fastened into the walls ateach end. `On this shaft L the arms M of the gate operate, and radiateto the circular periphery or face ofthe gate. The arms, fitting inbetween the subdivisions N, are built`of masonry, iron, or timber. Thecentre of the gate is braced by cross-timbers P. Q Q are wickets,connected by shafting couplings extending across the lock to allow thewater to pass down in to and through the lower chamber 'R that islocated underneath the bottom of the lock, shaped similar to the shape of the gate, for the gate to rest in when lowered, which allows the upperside lof the gate to form the ilooring of the lock. A fiangedand groovedclosing apparatus or device, S, on each side ofthe wall, shaped similarto the convex face of" the gate, and movable, makes the gate water-tightwhen raised, by closing the'joint between the gate and the wall. I alsohave a rack and pinion, T, attached to the inside of the face of thegate, thatsmay be used instead of the screw, if deemed necessary, or Imay be enabled to use this rack and pinion with' a chain and weight, oroperated by the power of the water upon a wheel above, or bevel gearing.

What I claim as my invention, and desire to secure by Letters Patent,isi 1. The construction of the gate, operating on its shaft L, with itsarms M fitting Vbetween thcdivisions N,

and having bracingl? P, and resting below the betteln of the canal inthecorrespondingly shaped chamber R, as herein described and for thepurpose set forth.4

2. I also claim the chamber It, constructed as described, withsubdivisions NN located b encaththe bottom of the canal, as hereindescribed and for the purpose set forth.

3. I also claim, in combination with such ehnmberand gate, theadjustable wickets, operated as described and for the purpose set forth.l i

4. I also claim, in combination with the gate, the movable device orapparatus S, as herein described and for the purpose set forth.

MARTIN BISHOP.

Witnesses:

J. FRANKLIN REIGART, JOHN S. HoLLINcsnEAD.

